From: Alan Modra <amodra@gmail.com>
Date: Sat, 19 Jun 2021 00:55:35 +0000 (+0930)
Subject: ubsan: vax: pointer overflow
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=47399e9c455b0a634e4c3597c8d9a292cc4b1b0c;p=binutils-gdb.git

ubsan: vax: pointer overflow

"VAX export class call relocation test" fails with ubsan on a 32-bit
host.

	* vax-dis.c (print_insn_vax): Avoid pointer overflow.
---

diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog
index f262529d566..035182c4a47 100644
--- a/opcodes/ChangeLog
+++ b/opcodes/ChangeLog
@@ -1,3 +1,7 @@
+2021-06-19  Alan Modra  <amodra@gmail.com>
+
+	* vax-dis.c (print_insn_vax): Avoid pointer overflow.
+
 2021-06-19  Alan Modra  <amodra@gmail.com>
 
 	* tic30-dis.c (get_register_operand): Don't ask strncpy to fill
diff --git a/opcodes/vax-dis.c b/opcodes/vax-dis.c
index e218d4969ca..ed4610b7afa 100644
--- a/opcodes/vax-dis.c
+++ b/opcodes/vax-dis.c
@@ -490,7 +490,7 @@ print_insn_vax (bfd_vma memaddr, disassemble_info *info)
 
   while (*argp)
     {
-      arg += print_insn_arg (argp, arg, memaddr + arg - buffer, info);
+      arg += print_insn_arg (argp, arg, memaddr + (arg - buffer), info);
       argp += 2;
       if (*argp)
 	(*info->fprintf_func) (info->stream, ",");